Data Sufficiency (DS) | Re: If ab > 0, is ab^2 > 0 ?

Given ab > 0
So a and b both should be same sign.

1. a>0 so b should be greater than 0 so ab^2 should be grater than 0. Sufficient
2. b>0 so a should be greater than 0 so ab^2 should be grater than 0. Sufficient.

So D should be answer

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